Answering Fermi

We are currently up to around 850 of the Special Guest Blogger Post's with an aim to reach 1,000 and the next 50 are already loaded into Blogger and post-dated including one for May/July for Scientist Enrico Fermi.
If you don't know him, he is best known for the Fermi Paradox which is the contradiction between the high probability of extraterrestrial life given the hundreds of billions of stars, planets and the vast age of the Milky Way and the total lack of evidence for it.
As always, i did take some liberties with him to make the Post interesting and inject a bit of humour so it doesn't read like a dry Encyclopedia entry but the Fermi Paradox is something that has always intrigued me and i have written a few posts about it on here and other places.
Cheekily answering for Fermi in the post, i put it down to either they have seen us and want to avoid us, the sheer distances involved (Our nearest star is 25 trillion miles away and would take our fastest spacecraft about 78,000 years to get there) or as i put it, our technology could be so outdated that by their advanced standards we could be doing the equivalent of sending smoke signals to an email account but we must throw in the unlikely scenario that as the Universe is 13.8 billion years old and humans have only been around for 300,000 of the Earth's 4 billion years (it faffed about with Dinosaurs for 180 million years and they didn't do anything except eat each other) then maybe other older Civilisations have been and gone.
How and why the older Civilisations have expired we will never know but i have a theory that once a Civilisation develops a way to end all life on the Planet, it inevitably end up doing exactly that.
Humans have discovered plenty of ways to do that with such things as Nuclear Weapons (Experts say it would take 300 to end all life and we have 12,500 knocking about), Biological weapons (the Soviet Union, United States and other nations developed Botulinum weapons, the deadliest substance known to man where just 2 kgs would kill every human on earth and the USA and USSR created tonnes of the stuff) and Chemical weapons  (VX Nerve Agent is so deadly it would take 8,000 litres to kill all life on earth and the Soviets produced 40,000 tonnes, the US 30,000 tonnes and Syria 50 tonnes while North Korea currently possess 5,000 tonnes).
Before we get chance to kill our stupid selves, Mother Nature may do it for us with the World Health Organisation stating that Climate Change is responsible for an additional 250,000 deaths per year around the World so we may not have to do it ourselves, our bizarre inaction and greed may do it for us anyway.
Fermi died in 1954 aged only 53 due to Cancer which he contracted by working on the Nuclear material for the Manhattan Project but 72 years on we still wait for Aliens to announce themselves or maybe they heard the news of the many ways the crazy bipeds who ruled the Planet could end all life and decided it wasn't worth the 78,000 year trip to get here because by the time they got here, our Planet would be just another empty rock going around a Star.